Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Optics
To get a diminished, virtual and erect image of a tall building, which mirror is used?
1
Plane mirror
2
Convex mirror
3
Both concave and plane mirror
4
More than one of the above
5
None of the above